diff --git a/_config.yml b/_config.yml
index add86ff..8142cc5 100644
--- a/_config.yml
+++ b/_config.yml
@@ -101,11 +101,11 @@ default_top_img: https://i.loli.net/2020/05/01/IuWi8QbHvzjlOPw.jpg
 archive_img:
 
 # the banner image of tag page
-# tag page, look like https://xxxxxxxxx.com/tags/butterfly
+# note: tag page, not tags page (子標籤頁面的 top_img)
 tag_img:
 
 # the banner image of category page
-# category page, look like https://xxxxxxxxx.com/categories/butterfly
+# note: category page, not categories page (子分類頁面的 top_img)
 category_img:
 
 # If you are using hexo-douban, you can configure it (如果你有使用 hexo-douban,可配置這個)
@@ -251,7 +251,9 @@ comments:
   # - Valine
   # - Disqus
   text: true # Display the comment name next to the button
-  load_begin: false # The second comment system will auto load when visiting the website
+  # lazyload: The comment system will be load when comment element enters the browser's viewport.
+  # If you set it to false, the comment count will be invalid
+  lazyload: false
   count: false # Display comment count in top_img
 
 # disqus
@@ -368,14 +370,13 @@ crisp:
 
 # Footer Settings
 # --------------------------------------
-
 footer:
-  owner: # 顯示站長信息
+  owner:
     enable: true
     since: 2020
-  custom_text: Hi, welcome to my blog! # 頁腳自定義文本
-  copyright: true # 顯示框架及主題作者信息
-  ICP: # 備案信息
+  custom_text: 
+  copyright: true # Copyright of theme and framework
+  ICP: # Chinese ICP License
     enable: false
     url:
     text:
@@ -456,7 +457,7 @@ yandex_site_verification:
 
 # The top_img settings of home page
 # default: top img - full screen, site info - middle (默認top_img全屏，site_info在中間)
-# The positon of site info, eg: 300px/300em/300rem/10% (主頁標題距離頂部距離)
+# The position of site info, eg: 300px/300em/300rem/10% (主頁標題距離頂部距離)
 index_site_info_top:
 # The height of top_img, eg: 300px/300em/300rem (主頁top_img高度)
 index_top_img_height:
@@ -553,12 +554,12 @@ font:
 # 左上角網站名字 主頁居中網站名字
 blog_title_font:
   font_link: https://fonts.googleapis.com/css?family=Titillium+Web&display=swap
-  font-family: Titillium Web, 'PingFang SC', 'Hiragino Sans GB', Microsoft YaHei', sans-serif
+  font-family: Titillium Web, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif
 
 # The setting of divider icon (水平分隔線圖標設置)
 hr_icon:
   enable: true
-  icon: # the unicode value of Font Awesome icon
+  icon: # the unicode value of Font Awesome icon, such as '\3423'
   icon-top:
 
 # the subtitle on homepage (主頁subtitle)
@@ -707,6 +708,8 @@ note:
 # other
 # --------------------------------------
 
+# Pjax [Beta]
+# It may contain bugs and unstable, give feedback when you find the bugs.
 # https://github.com/MoOx/pjax
 pjax: false
 
diff --git a/layout/includes/additional-js.pug b/layout/includes/additional-js.pug
index bc2e626..f33be48 100644
--- a/layout/includes/additional-js.pug
+++ b/layout/includes/additional-js.pug
@@ -43,10 +43,10 @@ div
 
   //- 鼠標特效
   if theme.click_heart
-    script(src=url_for(theme.CDN.click_heart))
+    script(src=url_for(theme.CDN.click_heart) async)
 
   if theme.ClickShowText && theme.ClickShowText.enable
-    script(src=url_for(theme.CDN.ClickShowText))
+    script(src=url_for(theme.CDN.ClickShowText) async)
 
   if theme.pangu && theme.pangu.enable
     include ./third-party/pangu.pug
@@ -76,11 +76,6 @@ div
     if theme.busuanzi.site_uv || theme.busuanzi.site_pv || theme.busuanzi.page_pv
       script(async src=url_for(theme.CDN.busuanzi))
 
-  if theme.pjax && theme.comments && theme.comments.use
-    !=partial('includes/comments/js-load-all', {}, {cache:theme.fragment_cache})
-  else if commentsJsLoad
-    !=partial('includes/comments/js-load-all', {}, {cache:theme.fragment_cache})
-
   if theme.aplayerInject && !config.aplayer.asset_inject
     if theme.pjax
       include ./head/aplayer.pug
diff --git a/layout/includes/comments/disqus.pug b/layout/includes/comments/disqus.pug
index 406b4cf..dcbe896 100644
--- a/layout/includes/comments/disqus.pug
+++ b/layout/includes/comments/disqus.pug
@@ -13,30 +13,27 @@ script.
       })
     }
 
-    if (window.DISQUS) {
-      disqusReset()
-    } else {
+    if (window.DISQUS) disqusReset()
+    else {
       (function() { 
-        var d = document, s = d.createElement('script')
-        s.src = 'https://!{theme.disqus.shortname}.disqus.com/embed.js'
-        s.setAttribute('data-timestamp', +new Date())
+        var d = document, s = d.createElement('script');
+        s.src = 'https://!{theme.disqus.shortname}.disqus.com/embed.js';
         s.setAttribute('data-timestamp', +new Date());
         (d.head || d.body).appendChild(s);
       })();
     }
   }
 
-  if ('!{defaultComment}' === 'Disqus' || !{theme.comments.load_begin}) {
-    loadDisqus()
-  }
-  else {
+  if ('!{theme.comments.use[0]}' === 'Disqus' || !!{theme.comments.lazyload}) {
+    if (!{theme.comments.lazyload}) loadComment(document.getElementById('disqus_thread'), loadDisqus)
+    else loadDisqus()
+  } else {
     function loadOtherComment () {
       loadDisqus()
     }
   }
 
-
-if is_post() && theme.comments.count && defaultComment === 'Disqus'
+if is_post() && !theme.comments.lazyload && theme.comments.count && theme.comments.use[0] === 'Disqus'
   script.
     if (window.DISQUSWIDGETS === undefined) {
       var d = document, s = d.createElement('script');
diff --git a/layout/includes/comments/disqusjs.pug b/layout/includes/comments/disqusjs.pug
index f04ce37..76d7b85 100644
--- a/layout/includes/comments/disqusjs.pug
+++ b/layout/includes/comments/disqusjs.pug
@@ -33,8 +33,9 @@ script.
     }
   }
 
-  if ('!{defaultComment}' === 'Disqusjs' || !{theme.comments.load_begin}) {
-    loadDisqusjs()
+  if ('!{theme.comments.use[0]}' === 'Disqusjs' || !!{theme.comments.lazyload}) {
+    if (!{theme.comments.lazyload}) loadComment(document.getElementById('disqus_thread'), loadDisqusjs)
+    else loadDisqusjs()
   }
   else {
     function loadOtherComment () {
@@ -43,7 +44,7 @@ script.
   }
 
 
-if is_post() && theme.comments.count && defaultComment === 'Disqusjs'
+if is_post() && !theme.comments.lazyload && theme.comments.count && theme.comments.use[0] === 'Disqusjs'
   script.
     if (window.DISQUSWIDGETS === undefined) {
       var d = document, s = d.createElement('script');
diff --git a/layout/includes/comments/facebook_comments.pug b/layout/includes/comments/facebook_comments.pug
index ac6bbba..65a1fbd 100644
--- a/layout/includes/comments/facebook_comments.pug
+++ b/layout/includes/comments/facebook_comments.pug
@@ -15,13 +15,10 @@ script.
     }   
   }
 
-  if ('!{defaultComment}' === 'Facebook Comments' || !{theme.comments.load_begin}) {
-    document.getElementsByClassName('fb-comments').length && loadFBComment()
-    !{theme.pjax} && document.addEventListener('pjax:complete', () => 
-      document.getElementsByClassName('fb-comments').length && loadFBComment()
-    )
-  }
-  else {
+  if ('!{theme.comments.use[0]}' === 'Facebook Comments' || !!{theme.comments.lazyload}) {
+    if (!{theme.comments.lazyload}) loadComment(document.querySelector('#post-comment .fb-comments'), loadFBComment)
+    else loadFBComment()
+  } else {
     function loadOtherComment () {
       loadFBComment()
     }
diff --git a/layout/includes/comments/gitalk.pug b/layout/includes/comments/gitalk.pug
index f80c59d..834b42a 100644
--- a/layout/includes/comments/gitalk.pug
+++ b/layout/includes/comments/gitalk.pug
@@ -33,15 +33,16 @@ script.
   }
   
   function commentCount(n){
-    if (document.querySelector('#post-meta .gitalk-comment-count')) {
-      document.querySelector('#post-meta .gitalk-comment-count').innerHTML= n
+    let isCommentCount = document.querySelector('#post-meta .gitalk-comment-count')
+    if (isCommentCount) {
+      isCommentCount.innerHTML= n
     }
   }
 
-  if ('!{defaultComment}' === 'Gitalk' || !{theme.comments.load_begin}) {
-    loadGitalk()
-  }
-  else {
+  if ('!{theme.comments.use[0]}' === 'Gitalk' || !!{theme.comments.lazyload}) {
+    if (!{theme.comments.lazyload}) loadComment(document.getElementById('gitalk-container'), loadGitalk)
+    else loadGitalk()
+  } else {
     function loadOtherComment () {
       loadGitalk()
     }
diff --git a/layout/includes/comments/js-load-all.pug b/layout/includes/comments/js-load-all.pug
deleted file mode 100644
index 45734de..0000000
--- a/layout/includes/comments/js-load-all.pug
+++ /dev/null
@@ -1,7 +0,0 @@
-- let defaultComment = theme.comments.use[0]
-each name in theme.comments.use
-  case name
-    when 'Valine'
-      include ./valine.pug
-    when 'Facebook Comments'
-      include ./facebook_comments.pug
\ No newline at end of file
diff --git a/layout/includes/comments/js.pug b/layout/includes/comments/js.pug
index 5eef692..4c2dae7 100644
--- a/layout/includes/comments/js.pug
+++ b/layout/includes/comments/js.pug
@@ -1,13 +1,16 @@
-- let defaultComment = theme.comments.use[0]
 each name in theme.comments.use
   case name
+    when 'Valine'
+      !=partial('includes/comments/valine', {}, {cache:theme.fragment_cache})
     when 'Disqus'
       include ./disqus.pug
     when 'Disqusjs'
       include ./disqusjs.pug
     when 'Livere'
-      include ./livere.pug
+      !=partial('includes/comments/livere', {}, {cache:theme.fragment_cache})
     when 'Gitalk'
       include ./gitalk.pug
     when 'Utterances'
-      include ./utterances.pug
+      !=partial('includes/comments/utterances', {}, {cache:theme.fragment_cache})
+    when 'Facebook Comments'
+      !=partial('includes/comments/facebook_comments', {}, {cache:theme.fragment_cache})
diff --git a/layout/includes/comments/livere.pug b/layout/includes/comments/livere.pug
index 9b442e3..faaa60e 100644
--- a/layout/includes/comments/livere.pug
+++ b/layout/includes/comments/livere.pug
@@ -10,8 +10,9 @@ script.
     })(document, 'script');
   }
 
-  if ('!{defaultComment}' === 'Livere' || !{theme.comments.load_begin}) {
-    loadLivere()
+  if ('!{theme.comments.use[0]}' === 'Livere' || !!{theme.comments.lazyload}) {
+    if (!{theme.comments.lazyload}) loadComment(document.getElementById('lv-container'), loadLivere)
+    else loadLivere()
   }
   else {
     function loadOtherComment () {
diff --git a/layout/includes/comments/utterances.pug b/layout/includes/comments/utterances.pug
index cc0d1ca..7911a3e 100644
--- a/layout/includes/comments/utterances.pug
+++ b/layout/includes/comments/utterances.pug
@@ -1,36 +1,34 @@
 script.
-  if (document.getElementById('utterances-wrap')) {
-    function loadUtterances () {
-      let ele = document.createElement('script')
-      ele.setAttribute('id', 'utterances_comment')
-      ele.setAttribute('src', '!{url_for(theme.CDN.utterances)}')
-      ele.setAttribute('repo', '!{theme.utterances.repo}')
-      ele.setAttribute('issue-term', '!{theme.utterances.issue_term}')
-      let nowTheme = document.documentElement.getAttribute('data-theme') === 'dark' ? '#{theme.utterances.dark_theme}' : '#{theme.utterances.light_theme}'
-      ele.setAttribute('theme', nowTheme)
-      ele.setAttribute('crossorigin', 'anonymous')
-      ele.setAttribute('async', 'true')
-      document.getElementById('utterances-wrap').insertAdjacentElement('afterbegin',ele)
-    }
+  function loadUtterances () {
+    let ele = document.createElement('script')
+    ele.setAttribute('id', 'utterances_comment')
+    ele.setAttribute('src', '!{url_for(theme.CDN.utterances)}')
+    ele.setAttribute('repo', '!{theme.utterances.repo}')
+    ele.setAttribute('issue-term', '!{theme.utterances.issue_term}')
+    let nowTheme = document.documentElement.getAttribute('data-theme') === 'dark' ? '#{theme.utterances.dark_theme}' : '#{theme.utterances.light_theme}'
+    ele.setAttribute('theme', nowTheme)
+    ele.setAttribute('crossorigin', 'anonymous')
+    ele.setAttribute('async', 'true')
+    document.getElementById('utterances-wrap').insertAdjacentElement('afterbegin',ele)
+  }
 
-    function utterancesTheme () {
-      if (document.querySelector('.utterances-frame')) {
-        const theme = document.documentElement.getAttribute('data-theme') === 'dark' ? '#{theme.utterances.dark_theme}' : '#{theme.utterances.light_theme}'
-        const message = {
-          type: 'set-theme',
-          theme: theme
-        };
-        const iframe = document.querySelector('.utterances-frame');
-        iframe.contentWindow.postMessage(message, 'https://utteranc.es');
-      }
+  function utterancesTheme () {
+    if (document.querySelector('.utterances-frame')) {
+      const theme = document.documentElement.getAttribute('data-theme') === 'dark' ? '#{theme.utterances.dark_theme}' : '#{theme.utterances.light_theme}'
+      const message = {
+        type: 'set-theme',
+        theme: theme
+      };
+      const iframe = document.querySelector('.utterances-frame');
+      iframe.contentWindow.postMessage(message, 'https://utteranc.es');
     }
+  }
 
-    if ('!{defaultComment}' === 'Utterances' || !{theme.comments.load_begin}) {
+  if ('!{theme.comments.use[0]}' === 'Utterances' || !!{theme.comments.lazyload}) {
+    if (!{theme.comments.lazyload}) loadComment(document.getElementById('utterances-wrap'), loadUtterances)
+    else loadUtterances()
+  } else {
+    function loadOtherComment () {
       loadUtterances()
     }
-    else {
-      function loadOtherComment () {
-        loadUtterances()
-      }
-    }
-  }
\ No newline at end of file
+  }
diff --git a/layout/includes/comments/valine.pug b/layout/includes/comments/valine.pug
index f97975d..a547529 100644
--- a/layout/includes/comments/valine.pug
+++ b/layout/includes/comments/valine.pug
@@ -4,18 +4,6 @@ if site.data.valine
 
 script.
   function loadValine () {
-    function requestSetting (from, set) {
-      var from = from
-      var setting = set.split(',').filter(function(item){
-      return from.indexOf(item) > -1
-      });
-      setting = setting.length == 0 ? from :setting;
-      return setting
-    }
-
-    var guestInfo = requestSetting(['nick','mail','link'],'#{ theme.valine.guest_info }')
-    var requiredFields = requestSetting(['nick','mail'],'#{ theme.valine.requiredFields }')
-
     function initValine () {
       window.valine = new Valine({
         el: '#vcomment',
@@ -23,7 +11,7 @@ script.
         appKey: '#{theme.valine.appKey}',
         placeholder: '#{theme.valine.placeholder}',
         avatar: '#{theme.valine.avatar}',
-        meta: guestInfo,
+        meta: '#{theme.valine.guest_info }'.split(','),
         pageSize: '#{theme.valine.pageSize}',
         lang: '#{theme.valine.lang}',
         recordIP: #{theme.valine.recordIP},
@@ -31,22 +19,22 @@ script.
         emojiCDN: '#{theme.valine.emojiCDN}',
         emojiMaps: !{emojiMaps},
         enableQQ: #{theme.valine.enableQQ},
-        requiredFields: requiredFields,
         path: window.location.pathname,
       });
+      if ('#{theme.valine.requiredFields}') { valine.config.requiredFields= '#{theme.valine.requiredFields}'.split(',') }
     }
 
     if (typeof Valine === 'function') initValine() 
     else $.getScript('!{url_for(theme.CDN.valine)}', initValine)
   }
 
-  if ('!{defaultComment}' === 'Valine' || !{theme.comments.load_begin}) {
-    document.querySelector('#vcomment') && loadValine()
-    !{theme.pjax} && document.addEventListener('pjax:complete', () => document.querySelector('#vcomment') && loadValine())
-  }
-  else {
+  if ('!{theme.comments.use[0]}' === 'Valine' || !!{theme.comments.lazyload}) {
+    if (!{theme.comments.lazyload}) loadComment(document.querySelector('#vcomment'),loadValine)
+    else setTimeout(() => loadValine(), 0)
+  } else {
     function loadOtherComment () {
       loadValine()
     }
   }
+  
 
diff --git a/layout/includes/head/google_adsense.pug b/layout/includes/head/google_adsense.pug
index 35a3bff..3ef1af9 100644
--- a/layout/includes/head/google_adsense.pug
+++ b/layout/includes/head/google_adsense.pug
@@ -1,5 +1,5 @@
 if (theme.google_adsense && theme.google_adsense.enable)
-  script(async src=theme.google_adsense.js data-pjax)
+  script(async src=theme.google_adsense.js)
 
   if theme.google_adsense.auto_ads
     script.
diff --git a/layout/includes/header/post-info.pug b/layout/includes/header/post-info.pug
index 8160e96..9fe7134 100644
--- a/layout/includes/header/post-info.pug
+++ b/layout/includes/header/post-info.pug
@@ -56,7 +56,7 @@
           span.post-meta-label=_p('post.page_pv') + ':'
           span#busuanzi_value_page_pv
 
-      if page.comments !== false && theme.comments.use && theme.comments.count
+      if !theme.comments.lazyload && page.comments !== false && theme.comments.use && theme.comments.count
         - var whichCount = theme.comments.use[0]
         if whichCount !== 'Livere' && whichCount !== 'Utterances'
           span.post-meta-separator |
diff --git a/layout/includes/mobile-sidebar/mobile-menus.pug b/layout/includes/mobile-sidebar/mobile-menus.pug
index ac562cd..42a0bed 100644
--- a/layout/includes/mobile-sidebar/mobile-menus.pug
+++ b/layout/includes/mobile-sidebar/mobile-menus.pug
@@ -1,6 +1,9 @@
 #mobile-sidebar-menus
   .mobile_author_icon
-    img.avatar-img(src=url_for(theme.avatar.img) onerror=`onerror=null;src='${theme.error_img.flink}'` alt="avatar")
+    if theme.lazyload.enable
+      img.avatar-img(data-lazy-src=url_for(theme.avatar.img) onerror=`onerror=null;src='${theme.error_img.flink}'` alt="avatar")
+    else
+      img.avatar-img(src=url_for(theme.avatar.img) onerror=`onerror=null;src='${theme.error_img.flink}'` alt="avatar")
   .mobile_post_data
     if site.posts.length
       .mobile_data_item.is-center
diff --git a/layout/includes/post/reward.pug b/layout/includes/post/reward.pug
index a201d0f..c3c1ac5 100644
--- a/layout/includes/post/reward.pug
+++ b/layout/includes/post/reward.pug
@@ -7,6 +7,9 @@
         each item in theme.reward.QR_code
           - var clickTo = (item.itemlist||item).link ? (item.itemlist||item).link : (item.itemlist||item).img
           li.reward-item
-            img.post-qr-code__img(src=url_for((item.itemlist||item).img) alt=(item.itemlist||item).text onclick=`window.open('${url_for(clickTo)}')`)
-            .post-qr-code__desc=(item.itemlist||item).text
+            if theme.lazyload.enable
+              img.post-qr-code-img(data-lazy-src=url_for((item.itemlist||item).img) alt=(item.itemlist||item).text onclick=`window.open('${url_for(clickTo)}')`)
+            else
+              img.post-qr-code-img(src=url_for((item.itemlist||item).img) alt=(item.itemlist||item).text onclick=`window.open('${url_for(clickTo)}')`)
+            .post-qr-code-desc=(item.itemlist||item).text
 
diff --git a/layout/includes/share/share-js.pug b/layout/includes/share/share-js.pug
index 85f84dd..b611f5e 100644
--- a/layout/includes/share/share-js.pug
+++ b/layout/includes/share/share-js.pug
@@ -1,4 +1,4 @@
 if (theme.sharejs && theme.sharejs.enable)
   .social-share(data-image=url_for(page.cover|| theme.avatar.img) data-sites= theme.sharejs.sites)
   link(rel="stylesheet" href=url_for(theme.CDN.sharejs_css))
-  script(src=url_for(theme.CDN.sharejs))
\ No newline at end of file
+  script(src=url_for(theme.CDN.sharejs) defer)
\ No newline at end of file
diff --git a/layout/includes/third-party/canvas-nest.pug b/layout/includes/third-party/canvas-nest.pug
index bb790be..f232128 100644
--- a/layout/includes/third-party/canvas-nest.pug
+++ b/layout/includes/third-party/canvas-nest.pug
@@ -1 +1 @@
-script#canvas_nest(color=theme.canvas_nest.color opacity=theme.canvas_nest.opacity zIndex=theme.canvas_nest.zIndex count=theme.canvas_nest.count mobile=`${theme.canvas_nest.mobile}` src=url_for(theme.CDN.canvas_nest))
\ No newline at end of file
+script#canvas_nest(defer color=theme.canvas_nest.color opacity=theme.canvas_nest.opacity zIndex=theme.canvas_nest.zIndex count=theme.canvas_nest.count mobile=`${theme.canvas_nest.mobile}` src=url_for(theme.CDN.canvas_nest))
\ No newline at end of file
diff --git a/layout/includes/third-party/canvas-ribbon-piao.pug b/layout/includes/third-party/canvas-ribbon-piao.pug
index 505af83..47b4460 100644
--- a/layout/includes/third-party/canvas-ribbon-piao.pug
+++ b/layout/includes/third-party/canvas-ribbon-piao.pug
@@ -1 +1 @@
-script(id="ribbon_piao" mobile=`${theme.canvas_ribbon_piao.mobile}` src=url_for(theme.CDN.canvas_ribbon_piao))
\ No newline at end of file
+script(defer id="ribbon_piao" mobile=`${theme.canvas_ribbon_piao.mobile}` src=url_for(theme.CDN.canvas_ribbon_piao))
\ No newline at end of file
diff --git a/layout/includes/widget/card_author.pug b/layout/includes/widget/card_author.pug
index 5adcd1b..57b69c3 100644
--- a/layout/includes/widget/card_author.pug
+++ b/layout/includes/widget/card_author.pug
@@ -1,7 +1,10 @@
 .card-widget.card-info
   .card-content
     .card-info-avatar.is-center
-      img.avatar-img(src=url_for(theme.avatar.img) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt="avatar")
+      if theme.lazyload.enable
+        img.avatar-img(data-lazy-src=url_for(theme.avatar.img) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt="avatar")
+      else
+        img.avatar-img(src=url_for(theme.avatar.img) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt="avatar")      
       .author-info__name= config.author
       .author-info__description!= theme.aside.card_author.description || config.description
 
diff --git a/source/css/_global/index.styl b/source/css/_global/index.styl
index b0a6106..fc57bf4 100644
--- a/source/css/_global/index.styl
+++ b/source/css/_global/index.styl
@@ -244,6 +244,14 @@ if hexo-config('avatar.effect') == true
   .sidebar-toc__content
     animation: tocsidebarRtoL .7s
 
+#mobile-sidebar-menus
+  &.open
+    transform: translate3d(-100%, 0px, 0px)
+
+    for i in 1 2 3 4
+      > :nth-child({i})
+        animation: sidebarItem (i / 5)s
+
 @keyframes scroll-down-effect
   0%
     top: 0
diff --git a/source/css/_layout/aside.styl b/source/css/_layout/aside.styl
index 365af45..07847b7 100644
--- a/source/css/_layout/aside.styl
+++ b/source/css/_layout/aside.styl
@@ -184,7 +184,7 @@
   .card-categories
     .card-category-list
       &.child
-        padding: 0 0 0 1rem
+        padding: 0 0 0 .8rem
 
       > .parent
         .card-category-list
diff --git a/source/css/_layout/category.styl b/source/css/_layout/category.styl
index e0026f9..1a7f82c 100644
--- a/source/css/_layout/category.styl
+++ b/source/css/_layout/category.styl
@@ -1,17 +1,17 @@
 .category-content
   ul
     margin-top: .4rem
-    padding: 0 0 0 .8rem
+    padding: 0 0 0 1rem
     list-style: none
     counter-reset: li
 
     ul
-      padding-left: .5rem
+      padding-left: .2rem
 
     li
       position: relative
       margin: .3rem 0
-      padding: .1rem .5rem .1rem 1.5rem !important
+      padding: .1rem .2rem .1rem 1rem
 
       &:before
         position: absolute
@@ -20,7 +20,6 @@
         transition: all .3s ease-out
         $w = .3rem
         top: 10px
-        margin-left: .45rem
         width: w = $w
         height: h = w
         border: .5 * w solid $light-blue
@@ -28,3 +27,7 @@
         background: transparent
         content: ''
         line-height: h
+
+      &:hover
+        &:before
+          border-color: $pseudo-hover
diff --git a/source/css/_layout/post.styl b/source/css/_layout/post.styl
index 33c068b..b7feb78 100644
--- a/source/css/_layout/post.styl
+++ b/source/css/_layout/post.styl
@@ -58,18 +58,24 @@ beautify()
     list-style: none
     counter-reset: li
 
+    @media screen and (max-width: $sm)
+      padding: 0 0 0 .4rem
+
     p
       margin: 0 0 .5rem
 
     ol,
     ul
-      padding-left: .5rem
+      padding-left: .6rem
+
+      @media screen and (max-width: $sm)
+        padding-left: 0.2rem
+
 
     li
       &:not(.tab)
         position: relative
         margin: .2rem 0
-        padding: .1rem .5rem .1rem 1.5rem
 
       &:hover
         &:before
@@ -86,9 +92,12 @@ beautify()
 
   ol
     > li
+      &:not(.tab)
+        padding: .1rem .2rem .1rem 1.4rem
+
       &:before
-        margin-top: .2rem
-        width: w = 1.2rem
+        margin-top: .3rem
+        width: w = 1rem
         height: h = w
         border-radius: .5 * w
         content: counter(li)
@@ -99,6 +108,8 @@ beautify()
 
   ul
     > li:not(.tab)
+      padding: .1rem .2rem .1rem 1rem
+
       &:hover
         &:before
           border-color: $pseudo-hover
@@ -106,7 +117,6 @@ beautify()
       &:before
         $w = .3rem
         top: 10px
-        margin-left: .45rem
         width: w = $w
         height: h = w
         border: .5 * w solid $light-blue
diff --git a/source/css/_layout/reward.styl b/source/css/_layout/reward.styl
index 43a5060..34f43de 100644
--- a/source/css/_layout/reward.styl
+++ b/source/css/_layout/reward.styl
@@ -65,7 +65,7 @@
             width: 130px
             height: 130px
 
-          .post-qr-code__desc
+          .post-qr-code-desc
             padding-top: .4rem
             width: 130px
             color: $reward-pop-up-color
diff --git a/source/js/main.js b/source/js/main.js
index b6de780..73422c5 100644
--- a/source/js/main.js
+++ b/source/js/main.js
@@ -37,7 +37,7 @@ const initAdjust = () => {
 /**
  * 進入post頁sidebar處理
  */
-const sidebarAutoOpen = () => {
+const OpenSidebarAuto = () => {
   if (window.innerWidth > 1024 && $('#toggle-sidebar').hasClass('on')) {
     setTimeout(function () {
       openSidebar()
@@ -87,7 +87,7 @@ const openSidebar = () => {
   })
 }
 
-const toggleSidebarFn = function () {
+const toggleSidebar = function () {
   $('#toggle-sidebar').on('click', function () {
     const isOpen = $(this).hasClass('on')
     isOpen ? $(this).removeClass('on') : $(this).addClass('on')
@@ -119,12 +119,7 @@ const sidebarFn = () => {
 
     if (name === 'menu') {
       $toggleMenu.removeClass('close').addClass('open')
-      $mobileSidebarMenus.css('transform', 'translate3d(-100%,0,0)')
-      const $mobileSidebarMenusChild = $mobileSidebarMenus.children()
-      for (let i = 0; i <= $mobileSidebarMenusChild.length; i++) {
-        const duration = i / 5 + 0.2
-        $mobileSidebarMenusChild.eq(i).css('animation', 'sidebarItem ' + duration + 's')
-      }
+      $mobileSidebarMenus.addClass('open')
     }
 
     if (name === 'toc') {
@@ -139,8 +134,7 @@ const sidebarFn = () => {
 
     if (name === 'menu') {
       $toggleMenu.removeClass('open').addClass('close')
-      $mobileSidebarMenus.css('transform', '')
-      $('#mobile-sidebar-menus > div,#mobile-sidebar-menus > hr').css('animation', '')
+      $mobileSidebarMenus.removeClass('open')
     }
 
     if (name === 'toc') {
@@ -196,7 +190,7 @@ const sidebarFn = () => {
 /**
  * 首頁top_img底下的箭頭
  */
-const indexScrollDown = () => {
+const scrollDownInIndex = () => {
   $('#scroll_down').on('click', function () {
     scrollToDest('#content-inner')
   })
@@ -319,7 +313,7 @@ function addPhotoFigcaption () {
  */
 
 let detectJgJsLoad = false
-const justifiedGalleryRun = function () {
+const runJustifiedGallery = function () {
   const $justifiedGallery = $('.justified-gallery')
   if ($justifiedGallery.length) {
     const $imgList = $justifiedGallery.find('img')
@@ -345,7 +339,7 @@ const justifiedGalleryRun = function () {
 /**
  * fancybox和 mediumZoom
  */
-const lightBox = function () {
+const addLightBox = function () {
   const isMediumZoom = GLOBAL_CONFIG.medium_zoom
   const isFancybox = GLOBAL_CONFIG.fancybox
   if (isFancybox) {
@@ -534,7 +528,7 @@ const tocFn = function () {
  * Rightside
  */
 
-let $rightsideEle = $('#rightside')
+const $rightsideEle = $('#rightside')
 
 // read-mode
 $rightsideEle.on('click', '#readmode', function () {
@@ -591,7 +585,7 @@ $rightsideEle.on('click', '#go-up', () => scrollToDest('body'))
  * 側邊欄sub-menu 展開/收縮
  * 解決menus在觸摸屏下，滑動屏幕menus_item_child不消失的問題（手機hover的bug)
  */
-const subMenuFn = function () {
+const clickFnOfSubMenu = function () {
   $('#mobile-sidebar-menus .expand').on('click', function () {
     $(this).parents('.menus_item').find('> .menus_item_child').slideToggle()
     $(this).toggleClass('closed')
@@ -634,7 +628,7 @@ const addCopyright = function () {
 /**
  * 網頁運行時間
  */
-const runtimeShow = function () {
+const addRuntime = function () {
   const $runtimeCount = $('#webinfo-runtime-count')
   if ($runtimeCount.length) {
     const publishDate = $runtimeCount.attr('publish_date')
@@ -656,7 +650,7 @@ const addTableWrap = function () {
  * 百度推送
  */
 
-const baiduPush = () => {
+const pushToBaidu = () => {
   const bp = document.createElement('script')
   const curProtocol = window.location.protocol.split(':')[0]
   if (curProtocol === 'https') {
@@ -673,7 +667,7 @@ const baiduPush = () => {
  * tag-hide
  */
 
-const tagHideClick = function () {
+const clickFnOfTagHide = function () {
   const $hideInline = $('.hide-button')
   if ($hideInline.length) {
     $hideInline.on('click', function (e) {
@@ -690,7 +684,7 @@ const tagHideClick = function () {
   }
 }
 
-const tabsClick = function () {
+const clickFnOfTabs = function () {
   const $tab = $('#article-container .tabs')
   $tab.find('.tab > button').on('click', function (e) {
     const $this = $(this)
@@ -711,7 +705,7 @@ const tabsClick = function () {
   })
 }
 
-const cardCategoryToggle = function () {
+const toggleCardCategory = function () {
   const $cardCategory = $('.card-category-list-item.parent i')
   $cardCategory.on('click', function (e) {
     e.preventDefault()
@@ -741,7 +735,7 @@ const switchComments = function () {
   })
 }
 
-const postNoticeUpdate = function () {
+const addPostOutdateNotice = function () {
   const data = GLOBAL_CONFIG.noticeOutdate
   var diffDay = diffDate(GLOBAL_CONFIG_SITE.postUpdate)
   if (diffDay >= data.limitDay) {
@@ -780,33 +774,33 @@ const unRefreshFn = function () {
     else adjustMenu(2)
   })
 
-  subMenuFn()
+  clickFnOfSubMenu()
   GLOBAL_CONFIG.copyright !== undefined && addCopyright()
-  GLOBAL_CONFIG.baiduPush && baiduPush()
+  GLOBAL_CONFIG.baiduPush && pushToBaidu()
 }
 
 const refreshFn = function () {
   initAdjust()
 
   if (GLOBAL_CONFIG_SITE.isPost) {
-    sidebarAutoOpen()
-    toggleSidebarFn()
+    OpenSidebarAuto()
+    toggleSidebar()
     GLOBAL_CONFIG_SITE.isSidebar && tocFn()
-    GLOBAL_CONFIG.noticeOutdate !== undefined && postNoticeUpdate()
+    GLOBAL_CONFIG.noticeOutdate !== undefined && addPostOutdateNotice()
   }
 
   sidebarFn()
-  GLOBAL_CONFIG_SITE.isHome && indexScrollDown()
+  GLOBAL_CONFIG_SITE.isHome && scrollDownInIndex()
   addHighlightTool()
   GLOBAL_CONFIG.isPhotoFigcaption && addPhotoFigcaption()
-  justifiedGalleryRun()
-  lightBox()
+  runJustifiedGallery()
+  addLightBox()
   scrollFn()
-  GLOBAL_CONFIG.runtime && runtimeShow()
+  GLOBAL_CONFIG.runtime && addRuntime()
   addTableWrap()
-  tagHideClick()
-  tabsClick()
-  cardCategoryToggle()
+  clickFnOfTagHide()
+  clickFnOfTabs()
+  toggleCardCategory()
   switchComments()
 }
 
diff --git a/source/js/utils.js b/source/js/utils.js
index 19ef9fa..db5973b 100644
--- a/source/js/utils.js
+++ b/source/js/utils.js
@@ -108,10 +108,24 @@ const initJustifiedGallery = function (selector) {
   })
 }
 
-const diffDate = function (d) {
+const diffDate = d => {
   const dateNow = new Date()
   const datePost = new Date(d.replace(/-/g, '/'))
   const dateDiff = dateNow.getTime() - datePost.getTime()
   const dayDiff = Math.floor(dateDiff / (24 * 3600 * 1000))
   return dayDiff
 }
+
+const loadComment = (dom, callback) => {
+  if ('IntersectionObserver' in window) {
+    const observerItem = new IntersectionObserver((entries) => {
+      if (entries[0].isIntersecting) {
+        callback()
+        observerItem.disconnect()
+      }
+    }, { threshold: [0] })
+    observerItem.observe(dom)
+  } else {
+    callback()
+  }
+}